For rear-wheel drive vehicles, how is front-wheel toe-in adjustment achieved?

Front-wheel toe-in adjustment in rear-wheel drive vehicles is primarily achieved by adjusting the tie rods. Toe-in refers to the angle at which the wheels point inward at the front when viewed from above, and it is crucial for vehicle stability and tire wear.

The tie rods connect the steering system to the steering knuckles at the front wheels and are responsible for adjusting the angle of the wheels. When the tie rods are lengthened or shortened, they change the angle of the wheels, allowing for proper toe-in adjustment. This precise adjustment helps ensure that the wheels are aligned correctly to improve handling and prevent uneven tire wear.

Other methods, such as changing the length of the steering linkage, do not directly affect the toe angle of the front wheels. Moreover, adjusting the rear suspension arms or realigning the differential does not influence the front wheel toe-in specifically, as these components do not have a direct relationship with the steering geometry affecting front-wheel alignment. Thus, the correct method for achieving this adjustment revolves around the modification of the tie rods.